Gypsum Calcium Sulfate Pellets 50lb Bag - Improve Soil Drainage

Our review of Kelly's Gypsum Calcium Sulfate Capsulated Pellets looks at a simple, single-purpose soil amendment for gardeners and turf managers who struggle with compacted, sodium-affected, or poorly draining soils. The bottom line: this 50 lb bag of micro pellets is most useful for anyone needing to increase water percolation and add plant-available calcium and sulfur without changing soil pH. It is an easy-to-handle form of gypsum that made a noticeable difference in drainage and root health on clay patches and compacted lawn areas in the tester's yard.

Key Features

• 50 lb micro pellets: A convenient pellet form that is easier to spread than dry powder and suitable for medium-sized lawns and garden beds.
• Improves soil structure: Gypsum loosens compacted clay soils, increasing water percolation and air penetration for healthier root systems.
• Provides calcium and sulfur: Supplies plant-available nutrients that help restore soil balance in sodium-affected or nutrient-poor areas.
• Enhances drainage: Helps reduce standing water and ponding by neutralizing high magnesium effects that contribute to poor drainage.
• pH neutral amendment: Does not raise soil pH, making it safe to use on alkaline soils where liming would be inappropriate.

Who It's For

This product is aimed at home gardeners, lawn care enthusiasts, and small-scale turf managers dealing with compacted clay, poor drainage, or sodium-impacted soil. It is particularly useful where improving percolation and providing calcium and sulfur are priorities.

Those who need a broad-spectrum fertilizer or pH adjustment should look elsewhere, since this is a targeted soil conditioner rather than a complete nutrient program or lime product. Large commercial growers with very high-volume needs may prefer bulk gypsum sources or custom-sourced materials.

Pros & Cons

Pros

• Improved water flow and reduced surface ponding after application on compacted areas.
• Supplies plant-available calcium and sulfur to address soil nutrient imbalances.
• pH neutral so it can be used safely on alkaline soils without raising pH.

Cons

• Acts as a soil conditioner rather than a fertilizer, so results depend on existing soil conditions and may take time to become apparent.

Specifications

Product	Gypsum calcium sulfate capsulated pellets
Weight per bag	50 lb
Form	Micro pellets
Key nutrients	Calcium and sulfur (plant-available)
Soil pH effect	pH neutral (does not raise soil pH)
Primary uses	Improve soil structure, enhance drainage, restore soil balance

Our Verdict

Kelly's 50 lb gypsum micro pellets are a practical and cost-effective choice for home lawns and garden areas that need better drainage and added calcium and sulfur without pH changes. For anyone battling compacted clay or sodium-affected spots, these pellets deliver measurable improvement in water percolation and root conditions, making them a worthwhile soil amendment for targeted use.

Frequently Asked Questions

How quickly will I see results?
Improvement in drainage and root penetration can be seen within weeks to a few months depending on soil compaction and weather.

Will this raise my soil pH?
No, gypsum is pH neutral and will not raise soil pH, so it is safe for alkaline soils.

Can it be used on lawns and garden beds?
Yes, it is suitable for lawns, turf, gardens, and areas with poor drainage or sodium-affected soils.